<samp id="occcg"><tfoot id="occcg"></tfoot></samp>

單項(xiàng)選擇題

Which spread spectrum technology does the 802.11b standard define foroperation？（）

A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR，F(xiàn)HSS，and DSSS

你可能感興趣的試題

單項(xiàng)選擇題

Which protocol is an open standard protocol framework that is commonly used in VPNs,to provid secure end-to-end communication?（）

A.L2TP
B.IPsec
C.PPTP
D.RSA

單項(xiàng)選擇題

Refer to the exhibit,a network administrator cannot establish a telnet session with the indicated router.What is the cause of this failure?（）

A.A level 5 password is not set
B.The vty password is missing
C.The console password is missing
D.An ACL is blocking Telnet access